The word Faux is a french word that means False. Faux painting is used for decorative finishes on the walls. The use of glaze in Faux painting is very useful. It is applied over the solid color base coat. The purpose is to create different textures and special effects on walls.
The glaze gives you more time to work with the paint giving you the desired effect. Without the glaze your drying time is much quicker and the effect is heavier. The glaze also helps to achieve the dreamy look; ie: There are no starting and stopping areas like you would see if you had omitted the glaze...hope this helps!